Roll out the dough on a surface lightly dusted with powdered sugar until about 1/4-inch thick. Work in small batches, keeping the rest of dough in the fridge. If the dough gets too sticky as you are working with it, place it back in the fridge.

Cut the dough into more or less 6 cm or two-inch squares.

Place about a teaspoon of the plum butter or poppy seed filling in the center of each dough square. Bring two opposite corners of the dough together over the filling to form a roll. Pinch the corners together. You can also place a tsp of filling on a corner of a square and roll it up like a crescent roll.